Final answer:
The electron dot diagram for AsF3 shows As as the central atom surrounded by three F atoms. There are three lone pairs on the central As atom.
Step-by-step explanation:
The electron dot diagram for AsF3 can be represented as:
As
|
F - As - F
|
F
In this diagram, the As atom is the central atom and is surrounded by three F atoms. Each F atom is connected to the As atom by a single bond represented by a dash (-).
The number of lone pairs on the central atom, in this case, As, can be determined by counting the number of pairs of electrons that are not involved in bonding. In AsF3, the As atom has three lone pairs, which means there are three pairs of electrons not involved in bonding.